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. (No Model.) M. W. BARSB. l STEAM BOILER FURNAGB. No. 345,357. PatentedJuly 13, 1886.

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W .565: @www im/1MM@ Utntrlu)v STATES MILLS W. BARsE, or OLEAN, Newvous.P

STEAM-BOILER FURNACE.-

:SPECIFICATION forming part'of Letters Patent No. 345,357, dated July13, 1886.

Application tiled February 18, 1886. Serial No. 192,368. (No model.) i

To all whom t may con/cern:

Be it known that I, MILLS W. BARsE, a citizen of the United States,residing at Olean, in the county of Gattaraugus and State of New York,have invented certain'new and useful Improvements in Steam BoilerFurnaces, of which the following is a specification, reference being hadtherein to the accompanying drawings.

My invention relates to improvements in` furnaces for steam-boilers, andthe object of my improvement is to produce a simple and inexpensivefurnace in which a mixture of hydrocarbon gas and air can be usedeconomically to heat steam-boilers of various forms. I attain theseobjects by the furnace and means illustrated in the accompanyingdrawings, in Which-- Figure lis a longitudinal vertical section througha furnace constructed in accordance with my invention, the ceiling ofwhich is formed by the body of a plain cylindrical steam-boiler,supported horizontally upon the walls of said furnace. Fig. 2 is atransverse vertical section of the same. Fig. 3 is a longitudinalvertical section of a Isubstantially similar furnace supporting aiiue-boiler provided also with pendent tubes extending nearly down tothe door of the furnace. is a transverse vertical section of the same.

The side and rear Walls, A, of the furnace are generally formed ofbricks, and form` a substantially rectangular chamber, B, the floor Ajof which is either built solid, as shown in Figs. 1 and 2, or is made oflarge tiles or of cast-metal plates A3, as shown in Figs. 3 andi- 4,that are removably supported by the side walls, in which case there is ahollow chamber, At, under said plates large enough to admit men tounseal the lower end of the pendent tubes d and remove the mud that maypossibly become collected therein. The boiler D is so supported by thewalls of the furnace that its under side is only a few inches (more orless) above the door of the furnace. The front end of the boiler issupported by atransom, A', that also partly closes the opening in thefront of the furnace. In this opening BL (preferably in the bottomthereof) is inserted one end of a pipe or pipes, C, through which Fig.4,

is forced, by a fan -Wheel or other suitable means, a current of mixedair and gas, or of mixed steam, air, and hydrocarbon gas, or othercombustible material, the furnace being specially adapted for usewherenatural hydrocarbon gas is obtained from gaswells andA used forheating purposes.

The pipe or pipes G are inserted in the opening B2, and the discharge ofcombustible material is parallel tothe sides of the furnace. The rush ofgas from the end of the pipes C, when lighted, causes currents of heatedair and gases that curl around the ,interior of the furnace, and becomesconsiderably packed and compressed in the rear portion thereof, andbeing drawn again into the dame from the pipe C they become highlyheated and naturally rise against the boiler and follow its under sideuntil they escape again through the front opening, Said opening may beprovided with a door to be partly closed to retard the exit of theheated gases and products of combustion over its upper edge, and as itis important that nothing should be present to remove the pressure ofgas from within the furnace, there is no chimney in Fig. 1 to vproduce adraft and useless waste of inflammable gases.

If it is desired to increase the heating-surface of the boiler it may beprovided with one or more rows of the pendent tubes d. They arevertically partitioned to produce a current through them, and have ascrew-cap at their lower end that can be removed to clean their interiorwhen desired. The boiler may also ybe provided with horizontal flues D',to carry off the hot gases issuing from the front opening, B2, and todirect them into said flues, a

hood, D2, may be secured to the front end of the boiler, and the gaseswill escape naturally at the rear end ofthe boiler.

I do not claim, broadly, a furnace having av IOO above said chamber andforming a tight ceilan opening, B2., at the front to receive and ingtherefor, said chamber having a closed discharge inflammable gases, anda pipe enrear end and an opening, B2, at the front, tering said openingto direct a currentV of in x5 substantially on thesame level with thefloor flammable gases into said chamber, substan- 5 of said chamber, todischarge the products of tially as and for the purpose described.

combustion, with `a pipe, C, entering said In testimony whereof I affixmy signature opening to direct a current of inflammable in presencepftwo witnesses.

gases into said chamber, substantially as and for the purpose described.MILLS W' BARSE 1o 2. A boiler-furnace consisting of achamber Witnesses:

having a boiler for a tight ceiling thereof, a D. C. LEFEVRE,

closed rear end, a floor removably supported, l v EDWARD H. SMITH.

